Improvement in gas-regulators



UNITED STATES "PATENT OFFICE CHARLES O. PLAGE, OF BOSTON, MASSACHUSETTS.

IMPROVEM ENT IN :GAS-REGULATORS.

Specioation forming part of Letters Patent No. 116,349, dated June 27, 1871.

' ing the same in such manner as to shut off the :dow

of gas when the pressure becomes too great, and

`vice versa; and it consists mainly of a method of weighing said vessel in such manner as to cause the same to be influenced by any desired amount of pressure by the use of a cup located at the center thereof, said cup containing mercury, through which passes the valve-rod, the joint between the same and the vessel being rendered gas-tight by means ofthe mercurial weight.

The details of construction and method of operation will be more fully described hereinafter. In the drawing, Arepresents the casing of the regulator, which is divided into compartments B O. The compartment B is separated from compartment O by the conical partition D, at the apex of which is a tube, E, which connects the two compartments. The lower end of said tube is provided with a knife-edge. F represents an annular reservoir around the walls of compartment O, which reservoir is filled with glycerine, in which rests the inverted vessel G, which is provided with concave top and divides the compartment O into two portions. I represents a conical valve attached to stem or rod J, which passes through the center of vessel G, and from thence to the upper portion of casing A, where it is held in place by a guide, K, through which the upper end projects. L represents a cup which is located on the center of vessel G, passing through the same, and being secured at the lower side by a nut, M. The rod J passes through the cup L, and is provided with a screwthread which engages with a corresponding thread on the orifice through the bottom of cup L. The top of casing A is provided with a movable cap, N. O represents a thumb-wheel or disk on the rod J, whereby the same is turned. I represents a reservoir at one side of casing A, communicating with the annular reservoir F. R is a compartment on the opposite side of casing A, communicating, through orifice S, with the lower portion of com'- partment C.

Gas is admitted through the port or oriice T into the compartment B, from whence it passes through tube E into the lower portion'of compartment O. The cup L is loaded with mercury to the desired amount of pressure, and as the gas accumulates below vessel G and the pressure of the same exceeds the amount for which the cup L is weighted, the vessel G is raised until the valve I closes the lower end of tube E and checks the ow of gas. From the compartment C the gas flows to the burner through orifice S and compartment R. The mercury in cup L, besides being a weight for vessel G, also constitutes a gas-tight joint for the rod J at `the point where it passes through the bottom of said cup. The valve I may be adjusted with `reference to the bottom of tube E by turning the rod J in such manner as to raise or depress the same. The glycerine filling the reservoir F constitutes a tube or packing which is perfectly gas-tight, and presents a great advantage over mercury, which has been previouslyused in this connection, inasmuch as there is no contraction or expansion, which, in the use of mercury, is liable to produce waste or mercury or leakage of gas.

The vessel G, cup L, and valve I are of glass, the surfaces of which are coated with quicksilver, which prevents the impurities in the gas from being deposited thereon. The knife-edge of tube E, on account of the small amount of surface to come in contact vwith valve I, also prevents gumming. The guide K serves an important use in preventing lateral displacement of rod J and vessel G, thereby insuring the perfect action of the same. The concave top of vessel G, in connection with the conical partition D, causes a more even pressure of gas on the vessel G, and consequently a better regulation of the same.

Hmingthus fully describedmyinventiomwhat In testimony whereof I have signed my name I elim as new7 and desire to seeure by Letters to this specification in the presence of two sub- Patent, is seribing witnesses.

1. The cup L with its mercury filling aetingas CHARLES C. PLACE. a Weight and gas-tight joint, substantially as described. Witnesses:

2. The cup L7 as described7 in combination with CARROLL D. WRIGHT, vessel G and rod J, as and for the purpose set C. F. BROWN.

forth. 

